Fence post coupler



FIG. 1 is an isometric view of a fence post coupler showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is an opposite side view thereof;

FIG. 5 is a top view; and,

FIG. 6 is a bottom view.

The broken line showing of visible environmental structures is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a fence post coupler, as shown and described. 